Fan attachment for chairs.



PATENTBD JUNE 25, 19o?. J. P. A. ezzuxsm. PAN ATTAGHMmT FOR CHAIRS.

AAPLIGATIOI `v'ILEDSIIP'IL B, 1905.

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' UNITED STATES PATENT oEEroE.

FAN ATTACHMENT Fon CHAIRS.

Specification of Letters Patent.

Patented .rune 25,' 1907.

Application filed September 8, 1905 Serial No. 277,559, Y

.i'o wl whom, llt/may concern:

Be it known that l, JosEiii F. A. inos'i, a citizen ol the United States ol America, residing :it Sharpsburg, in the county ot Allegheny and State o1 rennsylvania, have invented certain new and usel'ul improvements in FanV Attachments lor Chairs, ot which. the iollowing is a specilicatioii, relerence being had therein to the accompanying l drawing.

This invention relates to new and uset'ul improvements in ian attaclnnents ior rocking chairs.

The particular construction contemplates a device embodying a rotatable rod which is reciprocated .vertically on each rocking movement ol the chair, and which is alitoma-tically returned to initial position without the provision ot'any extraneous mechanism theretor. 'l'hese functions are accomplished by the detailed construction which will appear as the description proceeds, reference being had therein to the accompanying drawings orming a part oI this speciiication, like numerals indicating like parts throughout the several views in which l Figure l is aside elevation, one of the rockers being broken away to show the construction ot the lower portion ot thc-tan operating attachment, Fig. 2 is a detailed sectional -.iew enlarged of a hinged swivel joint connecting the rod above reterred to to a base shown in elevation, Fig. 3 is a side elevation enlarged of a collar sleeved upon said rod and a clamp lor holding said collar to the chair,

Fig. 4 1s a top plan view thereof, Fig. 5 is a longitudinal section enlarged showing the interior construction of the collar. side elevation of a clamp connecting the structure at its i'ace with the rocker ot' the chair, and Fig. 7 is a top plan view thereof. Fig. 8 is a top plan View enlarged of the fan, the ends thereot being broken away, and showing a ratchet device for preventing the backward rotation thereof. Fig. 9 is a side view of the parts shown in Fig. 8.

Referring specilically to the accompanying drawings A designates a rocking chair which is provided with the usual curved rockersB of ordinaryv forni. The fan attachment therefor embodies a vertical rod 1 which is provided adjacent the upper portion thereof with a relatively long spirally threaded surface 2. The rod 1 is formed on its lower end with a head 3, see Fig. 2 which is rotatably mounted in a socket 4, a set screw being Fig. 6 is a threaded into said socket and being adapted to engage an annular groove 6 icrmed on said rod 1 adjacent the head 3 thereol, to prevent the displacement ol the said rod. The socket L1 is hinged by a knuckle joint 7 to a base S carrying a lriction roller 9. lhe base S has rigid connection in any desirable manner with a very poweriul leal spring 10 by which it is connected to the rocker B, the said spring 1U having its other end secured to a lateral extension'll mounted upon a U shaped clamp 12, adapted to straddle said rocker and be held thereon by a flat headed set screw 13. 'l'he iod 1 is connected to the back ot' the chair A at its top by virtue oi a clamp 14 similar in construction to the clamp 12. The clamp 14 carries a hinged socket 15 into which is threaded a set screw 16 which secures in said socket a rod 17 having a terminal collar 1S, sleeved upon said rod 1. The collar 18 is shown in detail in Fig. 5, and is tormed with a vertical bore 19 into which projects short length inclined teeth 20, adapted to mesh with the spirally threaded surtuee 2 ol said rod 1.

The fan 21 carries on its under surface, at itsl center, a depending socket 22 which is held on the rod 1 by a set screw 23, and the fan is free to revolve on thc socket. Fan 21 has mounted thereon a spring pressed paw-l 24, adapted to engage with the teeth of a ratchet 25 integral with the socket 22. should be here stated that the socket 22 is loosely mounted on said fan 21 so as to have rotation independent thereof. Revolubly mounted upon the' socket 22 is a linger 2o which is bent into an L shape and projects through a curved slot 27 in the fan blade 21, the pin 26 being adapted to engage the curved surface of the pivoted pawl 24 so as to throw the latter, at the proper time, out of engagement with the ratchet 25.

1n operation as the chair is rocked, on L11@ backward stroke of the rockers B, he rod 1 will hit the lloor against the tension ot the spring 10, the roller 9 upon the base thereof,

a'ording an even surface of travel. The movement of the chair upon its rockers will cause the sleeve 18 to also move in a vertical direction on the rod, and the latter will be s1- multaneously rotated through the internieshing engagement of the teeth formed in the bore 1Q of the collar 18 with the s irally threaded surface 2 of said rod. As the red is rotated it will engage the pawl 24 with its ratchet of the fan 21 and posi- ICO ill

tively move thv latter. 'hen the backward movement of the rocker ceases and the forward movement thereof commences. the i springr It) will maintain said rod l in engagesaid rod, a ratchet carried bv said socket, a.

ment with the tloor until the chair moves for- E ward l'a-r enough to relieve the tension of the 'I spring, and thereby as the sleeve 1S moves upward and backward with the rocker, the rod l will be alternately rotatedin opposite directimis. As the rotar)v motion of the rod l ceases, the momentum of the fan 21 will continue its rotation and overtafe the upward projecting portion of the rod 26 and cause the same to act upon the inclined outer end of the pawl 24 and disconnect the latter from the ratchet and permitI the rod to return to its former position, and when the next forward stroke emnmences the momentum of the ian will release the rod 2G and permit thv pawl to be again thrown in Contact with thv ratchet ready to repeat the stroke. By this means thv forward motion of thv fan is continuous as will be obvious.

Various minor Changesl may be made without departiiggr from the spirit or scope of my invention as defined in the appended claims.

Having fully described my invention, I elainu* l. A fan attaclunent for rocking chairs embodyingr a. substantiall '-'vertieallydisposed rod, a spring securedto said rod adjacent to bottom thereof and a clamp carried by said spring whereby to secure the latter to the rocker of a chair aid rod being formed for a portion of its length with a threaded surface, a collar sleeved upon said rod, said collar havinf?r pivotal connection with a clamp mounted upon the back of the chair, said collar being also internally threaded and adapted to engage with the rod threads, a fan. a depending socket loosely mounted therein, means for securingr said socket to spring pressed pawl carried by `said fan blade and adapted to be engaged b v said ratchet. and a resilient linger projectin r through a slot in said fan and movable therein. said inger beine;r adapted to engage said pawl to throw the latter away from' contact with said ratchet. v

2. A fan attachment for rocking chairs embodying a vertical rod formed along a portion of its length with a. threaded surface, a socket secured to the bottom of said rod, a friction roller mounted in said socket, a. lea-f spring rigidly carried by said socket; a clamp rigidly secured to the end of the said leaf springr and adapted to straddle the rocker of the chair whereby to secure said leaf spring' to said rovker, a clamp secured to the back of the chair. a hinge socketl carried by said clamp, a stationary collar sleeved upon said rod and held in said socket, said Collar being formed on its inner periphery with inclined teeth adapted to intvrmesh with said spiral surface, a fan, a depending socket rotatably mounted in said fan at a. central point, means for securingT the said socket to said rod, 'a ratchet carried by said socket and a spring,r ressed pawl pi'rotally mounted upon said an and adapted to be engaged by `said ratchet.

In testimony whereof I affix my signature in the presence of two witnesses.

JOSEPH F. A.. PHOBST. W'it'nesses:

JOHN S. POWERS, JOHN E. SOELLNER. 

